day07-2 dynamic routing ospf
TRANSCRIPT
-
8/13/2019 Day07-2 Dynamic Routing Ospf
1/23
1
-
8/13/2019 Day07-2 Dynamic Routing Ospf
2/23
2
Open standard protocol
Successor of RIP
Classless routing protocol
Works with Link State Advertisements
Updates are Multicast
Works with Dijkstra algorithm, also called SPF
algorithm
Administrative distance is 110
Metric = Cost =108/Bandwidth in bps (CISCO)
Open Shortest Path First
-
8/13/2019 Day07-2 Dynamic Routing Ospf
3/23
-
8/13/2019 Day07-2 Dynamic Routing Ospf
4/23
4
It maintains three tables :
Neighbor Table
Neighbor table contains information about the directly
connected ospf neighbors forming adjacency.
Database table
Database table contains information about the entire
view of the topology with respect to each router.
Routing information Table
Routing table contains information about the best path
calculated by the shortest path first algorithm in the
database table.
OSPF Tables
-
8/13/2019 Day07-2 Dynamic Routing Ospf
5/23
5
Broadcast Multiaccess
Ethernet
Election of DR and BDR
Point to Point
Dedicated Serial Link
Non Broadcast Multiaccess
Frame Relay, X.25
OSPF Topologies
-
8/13/2019 Day07-2 Dynamic Routing Ospf
6/23
6
OSPF - Network Diagram
E0192.168.1.150/24
HYD
LAN - 192.168.1.0/24
E0192.168.2.150/24
CHE
LAN - 192.168.2.0/24
E0192.168.3.15
BAN
LAN - 192.168.3.0/24
10.0.0.1/8S0
S110.0.0.2/8
11.0.0.1/8S0
S111.0.0.2/8
AREA 0
-
8/13/2019 Day07-2 Dynamic Routing Ospf
7/23
7
Consumes More Memory and CPU processing
Disadvantages of OSPF
-
8/13/2019 Day07-2 Dynamic Routing Ospf
8/23
8
-
8/13/2019 Day07-2 Dynamic Routing Ospf
9/23
9
exityderabad(config-if)#Hyderabad(config)#
telnet 192.168.1.150================================Welcome to Hyderabad Router================================User Access Verificationpassword :****
****enableconfigure terminalinterface serial 0ip address 10.0.0.1 255.0.0.0
no shutclockrate 64000encapsulation hdlc
Hyderabad>password :Hyderabad#Enter configuration commands, one per line. End with CNTL/Z.Hyderabad(config)#Hyderabad(config-if)#Hyderabad(config-if)#Hyderabad(config-if)#Hyderabad(config-if)#
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....
Directly Connected Networks onHYDERABAD Router
192.168.1.0
10.0.0.0
-
8/13/2019 Day07-2 Dynamic Routing Ospf
10/23
10
Hyderabad(config)# router ospf 1Hyderabad(config-router)#Hyderabad(config-router)# network 192.168.1.0 0.0.0.255 area 0Hyderabad(config-router)# network 10.0.0.0 0.255.255.255 area 0
no ip routingyderabad(config)#Hyderabad(config)# ip routing
Configuring OSPF
Router(config)# router ospf
Router(config-router)# network area
-
8/13/2019 Day07-2 Dynamic Routing Ospf
11/23
11
show ip routeyderabad#Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter areaN1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGPi- IS-IS, L1-IS-IS level-1, L2-IS-IS level-2,*- candidate defaultU - per-user static route, o - ODR
Gateway of last resort is not setC 10.0.0.0/8 is directly connected, Serial0O 11.0.0.0/8 [110/128] via 10.0.0.2, 00:00:36, Serial0C 192.168.1.0/24 is directly connected, Ethernet0O 192.168.2.0/24 [110/74] via 10.0.0.2, 00:00:36, Serial0O 192.168.3.0/24 [110/138] via 10.0.0.2, 00:00:36, Serial0Hyderabad#
^Z
O for OSPF routes110 is nothing but
Administrative Distance
Metric of OSPF
Cost
Hyderabad(config)# router ospf 1Hyderabad(config-router)#Hyderabad(config-router)# network 192.168.1.0 0.0.0.255 area 0Hyderabad(config-router)# network 10.0.0.0 0.255.255.255 area 0
no ip routingyderabad(config)#Hyderabad(config)# ip routing
-
8/13/2019 Day07-2 Dynamic Routing Ospf
12/23
12
show ip ospf databaseyderabad#OSPF Router with ID (192.168.1.150) (Process ID 1)
Router Link States (Area 0)Link ID ADV Router Age Seq# Checksum Link192.168.1.150 192.168.1.150 790 0x80000003 0x897B 3192.168.2.150 192.168.2.150 234 0x80000005 0x542 5192.168.3.150 192.168.3.150 232 0x80000003 0xD328 3Hyderabad# show ip ospf neighborNeighbor ID Pri State Dead Time Address192.168.2.150 1 FULL/ - 00:00:36 10.0.0.2Hyderabad#
-
8/13/2019 Day07-2 Dynamic Routing Ospf
13/23
13
Chennai(config-if)#Chennai(config-if)#
================================Welcome to Chennai Router================================User Access Verificationpassword :****
****enableconfigure terminal
ip address 10.0.0.2 255.0.0.0no shutencapsulation hdlcinterface serial 0
Chennai>password :Chennai#Enter configuration commands, one per line. End with CNTL/Z.Chennai(config)#Chennai(config-if)#Chennai(config-if)#Chennai(config-if)#Chennai(config-if)#
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....
Chennai(config-if)#
telnet 192.168.2.150
interface serial 1
ip address 11.0.0.1 255.0.0.0no shutencapsulation hdlc
Directly Connected Networks onCHENNAI Router
192.168.2.0
10.0.0.0
11.0.0.0
-
8/13/2019 Day07-2 Dynamic Routing Ospf
14/23
14
Chennai(config)# router ospf 2Chennai(config-router)#Chennai(config-router)# network 192.168.2.0 0.0.0.255 area 0Chennai(config-router)# network 10.0.0.0 0.255.255.255 area 0
no ip routinghennai(config)#Chennai(config)# ip routing
network 11.0.0.0 0.255.255.255 area 0Chennai(config-router)# Configuring OSPFRouter(config)# router ospf
Router(config-router)# network area
-
8/13/2019 Day07-2 Dynamic Routing Ospf
15/23
15
show ip routehennai#Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter areaN1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGPi- IS-IS, L1-IS-IS level-1, L2-IS-IS level-2,*- candidate defaultU - per-user static route, o - ODR
Gateway of last resort is not set
C 10.0.0.0/8 is directly connected, Serial1C 11.0.0.0/8 is directly connected, Serial0O 192.168.1.0/24 [110/74] via 10.0.0.1, 00:01:33, Serial1C 192.168.2.0/24 is directly connected, Ethernet0O 192.168.3.0/24 [110/74] via 11.0.0.2, 00:01:33, Serial0Chennai#
^Z
O for OSPF routes110 is nothing but
Administrative Distance
Metric of OSPF
Cost
Chennai(config)# router ospf 2
Chennai(config-router)#Chennai(config-router)# network 192.168.2.0 0.0.0.255 area 0Chennai(config-router)# network 10.0.0.0 0.255.255.255 area 0
no ip routinghennai(config)#Chennai(config)# ip routing
network 11.0.0.0 0.255.255.255 area 0Chennai(config-router)#
-
8/13/2019 Day07-2 Dynamic Routing Ospf
16/23
16
show ip ospf databasehennai#OSPF Router with ID (192.168.2.150) (Process ID 2)
Router Link States (Area 0)Link ID ADV Router Age Seq# Checksum Link192.168.1.150 192.168.1.150 1253 0x80000003 0x897B 3192.168.2.150 192.168.2.150 695 0x80000005 0x542 5192.168.3.150 192.168.3.150 693 0x80000003 0xD328 3Chennai# show ip ospf neighborNeighbor ID Pri State Dead Time Address192.168.3.150 1 FULL/ - 00:00:35 11.0.0.2192.168.1.150 1 FULL/ - 00:00:32 10.0.0.1Chennai#
-
8/13/2019 Day07-2 Dynamic Routing Ospf
17/23
17
exitanglore(config-if)#Banglore(config)#
================================Welcome to Banglore Router================================User Access Verificationpassword :****
****enableconfigure terminal
ip address 11.0.0.2 255.0.0.0no shutclockrate 64000encapsulation hdlc
Banglore>password :Banglore#Enter configuration commands, one per line. End with CNTL/Z.Banglore(config)#Banglore(config-if)#Banglore(config-if)#Banglore(config-if)#Banglore(config-if)#
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....telnet 192.168.3.150
interface serial 1
Directly Connected Networks onBanglore Router
192.168.3.0
11.0.0.0
-
8/13/2019 Day07-2 Dynamic Routing Ospf
18/23
18
Banglore(config)# router ospf 1Banglore(config-router)#Banglore(config-router)# network 192.168.3.0 0.0.0.255 area 0Banglore(config-router)#
no ip routinganglore(config)#Banglore(config)# ip routing
network 11.0.0.0 0.255.255.255 area 0Configuring OSPF
Router(config)# router ospf
Router(config-router)# network area
-
8/13/2019 Day07-2 Dynamic Routing Ospf
19/23
19
show ip routeanglore#Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter areaN1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGPi- IS-IS, L1-IS-IS level-1, L2-IS-IS level-2,*- candidate defaultU - per-user static route, o - ODR
Gateway of last resort is not setO 10.0.0.0/8 [110/128] via 11.0.0.1, 00:02:09, Serial1C 11.0.0.0/8 is directly connected, Serial1O 192.168.1.0/24 [110/138] via 11.0.0.1, 00:02:09, Serial1O 192.168.2.0/24 [110/74] via 11.0.0.1, 00:02:09, Serial1C 192.168.3.0/24 is directly connected, Ethernet0Banglore#
^Z
O for OSPF routes110 is nothing but
Administrative Distance
Metric of OSPF
Cost
Banglore(config)#router ospf 1Banglore(config-router)#Banglore(config-router)# network 192.168.3.0 0.0.0.255 area 0Banglore(config-router)#
no ip routinganglore(config)#Banglore(config)# ip routing
network 11.0.0.0 0.255.255.255 area 0
-
8/13/2019 Day07-2 Dynamic Routing Ospf
20/23
20
show ip ospf databaseanglore#OSPF Router with ID (192.168.3.150) (Process ID 1)
Router Link States (Area 0)Link ID ADV Router Age Seq# Checksum Link192.168.1.150 192.168.1.150 1506 0x80000003 0x897B 3192.168.2.150 192.168.2.150 948 0x80000005 0x542 5192.168.3.150 192.168.3.150 944 0x80000003 0xD328 3Banglore#show ip ospf neighborNeighbor ID Pri State Dead Time Address192.168.2.150 1 FULL/ - 00:00:37 11.0.0.10.1Banglore#
-
8/13/2019 Day07-2 Dynamic Routing Ospf
21/23
21
ping 192.168.3.1yderabad#Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 msHyderabad#ping 192.168.2.1Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 msHyderabad#
-
8/13/2019 Day07-2 Dynamic Routing Ospf
22/23
22
ping 192.168.1.1hennai#Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 msChennai# ping 192.168.3.1Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 msChennai#
-
8/13/2019 Day07-2 Dynamic Routing Ospf
23/23
23
ping 192.168.1.1anglore#Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 msBanglore#ping 192.168.2.1Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 msBanglore#